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164 results about "Row vector" patented technology

In linear algebra, a row vector or row matrix is a 1 × m matrix, i.e. a matrix consisting of a single row of m elements: The transpose of a row vector is a column vector: The set of all row vectors forms a vector space which acts like the dual space to the set of all column vectors, in the sense that any linear functional on the space of column vectors can be represented uniquely as a dot product with a specific row vector.

Vehicle fault root cause diagnosis method, device, equipment and medium

The invention provides a vehicle fault root cause diagnosis method, equipment, equipment and a medium, and the method comprises the steps: obtaining a vehicle target fault phenomenon, determining a to-be-detected fault event set based on a preset fault logic relation, constructing an initial scoring matrix, enabling a row vector to correspond to a fault event, enabling a column vector to correspond to the state feature parameters of a plurality of evaluation dimensions, and carrying out the detection of the fault event set; executing the detection task of the highest comprehensive score fault event, obtaining feedback data, updating the initial score matrix parameters based on the feedback data to obtain an updated score matrix, and calculating the comprehensive score of each event based on the updated score matrix again. Iteratively executing the detection task corresponding to the updated highest score event to identify whether the detection event is a fault root cause or not until the fault root cause of the target fault phenomenon is determined; according to the method, through a dynamic priority scheduling mechanism, real-time feedback data is fused in multi-dimensional evaluation, a high-value diagnosis task is executed preferentially, the resource consumption of traditional traversal diagnosis is remarkably reduced, and the fault positioning efficiency is effectively improved.
Owner:CHONGQING SELIS PHOENIX INTELLIGENT INNOVATION TECH CO LTD

Online analysis method and system for ink-jet printing wastewater treatment data

The invention relates to the field of wastewater treatment, in particular to an online analysis method and system for ink-jet printing wastewater treatment data, and the method comprises the steps: obtaining the water quality, process and equipment state parameter data of ink-jet printing wastewater based on each sensor, and constructing an original data matrix through preprocessing; decomposing the matrix, selecting a preset number of principal components for reconstruction, and generating a reconstructed data matrix; a reconstruction error is calculated by analyzing the difference between an original matrix and a reconstruction matrix, a correlation distortion index is analyzed based on row vector similarity, and an objective function is constructed to determine the number of optimal principal components; and clustering is carried out by using reconstruction errors and distances, abnormal data points are screened, and process parameters are regulated and controlled. According to the method, by optimizing the number of principal components and improving clustering analysis, the noise interference problem under complex water quality changes is effectively solved, the anomaly detection precision and the system stability are remarkably improved, and the robustness and the adaptability of an ink-jet printing wastewater treatment system are enhanced.
Owner:SHAOXING QIANYONG TEXTILE CO LTD

Large model training method based on second-order matrix optimization

The invention discloses a large model training method based on second-order matrix optimization, and belongs to the field of deep learning model training technology optimization, and the large model training method based on second-order matrix optimization comprises the following steps: S1, decomposing a second-order matrix into row and column vectors, and carrying out sliding average and distributed block reduction storage; s2, generating a statistical row vector by combining row gradient aggregation with a historical attenuation factor; s3, carrying out block distributed statistics in the column direction and synchronously generating column vectors across equipment; s4, a low-rank matrix is constructed through outer products of row and column vectors, and estimation precision is improved through noise suppression; s5, performing dynamic sparse sampling, performing initial high-density focusing, and stabilizing the sampling rate of a key layer; s6, the sampling points execute time sequence attenuation updating, and asynchronous calculation is carried out to improve the resource utilization rate; s7, performing Gaussian kernel smoothing on a neighborhood value compensation coverage gap in an unsampled region; s8, fusing low-rank estimation and sparse data, and balancing global precision by self-adaptive weight; the method has the beneficial effects of reducing video memory occupation, and improving distributed computing efficiency and balance training precision and speed.
Owner:BEIJING DIGITAL FUTURE TECHNOLOGY CO LTD

Quantum chemistry Hamiltonian rapid generation method and device based on stability sub-table

The invention relates to a quantum chemistry Hamiltonian rapid generation method and device based on a stability sub-table, and the method comprises the steps: obtaining a single electron integral item, a double electron integral item and a nuclear energy item of a target Fermi Hamiltonian, and storing the nuclear energy item; dividing the equal double-electron integrals into the same calculation object class, and deleting double-electron integral items corresponding to the double-electron integrals of which the absolute values are smaller than a threshold value; converting the single-electron integral item and the double-electron integral item into a Bose Hamiltonian expression form; filling the stable sub-form table based on all Fouli items to obtain a Fouli check matrix, and recording a coefficient vector; the same row vectors in the Follicle check matrix are merged, the Follicle coefficients corresponding to the merged row vectors are added, and the row vectors with the Follicle coefficients being 0 are deleted; and storing the Follicle check matrix and the coefficient vector. According to the technical scheme, the efficiency of converting the Fermi Hamiltonian into the Bose Hamiltonian can be improved.
Owner:SUZHOU MICRO ERA QUANTUM TECHNOLOGY CO LTD

Server aging test method and device, electronic equipment and storage medium

The invention relates to the technical field of server aging testing, in particular to a server aging testing method and device, electronic equipment and a storage medium. Then convolution processing is carried out on each aging data queue in a sliding mode through a difference operator, the obtained multiple first convolution queues are segmented one by one, queue segments obtained through segmentation are normalized, and multiple queue segments are obtained; performing dot product calculation on each queue segment, each same-time-segment queue segment and each same-part queue segment to obtain a plurality of dot product results, and adding representative values determined according to the plurality of dot product results into a test analysis matrix; and finally, according to the plurality of row vectors of the test analysis matrix, determining the abnormal probability of the plurality of tested parts of the server. According to the method, the state of the detected component is determined based on the cross point product and probability estimation, so that the problem component can be found early.
Owner:XIONGAN BAIXIN INFORMATION TECHNOLOGY CO LTD

SAR (Synthetic Aperture Radar) anti-interference evaluation method and device based on maximum variance combined with hierarchical entropy weight

The invention provides an SAR (Synthetic Aperture Radar) anti-interference evaluation method and device based on maximum variance combined with layered entropy weight, and relates to the technical field of radar anti-interference. Comprising the following steps: constructing an evaluation index matrix according to a plurality of target SAR echoes; dividing the plurality of evaluation indexes into two layers of indexes by using a Pearson correlation analysis algorithm according to the evaluation index matrix and a preset threshold value; according to the plurality of evaluation indexes, the random number and the normalized evaluation index matrix, constructing a maximum variance evaluation optimization model which takes a maximized weighted evaluation matrix and a utility value matrix as objective functions and takes a difference degree weight row vector as a parameter to be solved; according to the maximum variance evaluation optimization model and the evaluation index matrix, determining a maximum difference evaluation matrix by using an interior point method; and according to the maximum difference evaluation matrix, the evaluation index matrix and the two layers of indexes, determining a plurality of evaluation values corresponding to the plurality of anti-interference methods by using a layered entropy weight method. In this way, the accuracy of anti-interference evaluation of various anti-interference methods is high.
Owner:XIDIAN UNIV

Game behavior anomaly detection method based on spatio-temporal feature fusion

The invention provides a game behavior anomaly detection method based on spatio-temporal feature fusion, which comprises the following steps of: visual coding of behavior data: collecting user operation time sequence data, and performing hue mapping coding according to event types, respectively mapping the basic operation event, the core interaction event, the numerical value change event and the non-operation event into differentiated colors, wherein the numerical value event adopts a gradient color to represent the change intensity; dividing the time sequence data into row vectors based on a preset time unit, generating a two-dimensional behavior map through multi-row stacking, transversely representing time continuity, longitudinally reflecting behavior cycle regularity, and forming a visual data carrier containing spatial-temporal characteristics; and two-channel detection model construction: constructing a double-layer architecture of a supervised detection channel and an enhanced detection channel, wherein the supervised detection channel adopts a deep convolutional neural network to extract map spatial features and is connected with an interpretable classifier to output a behavior compliance probability.
Owner:JIAXIANG INTERACTIVE XIAMEN NETWORK TECH CO LTD

Motion track prediction method and system based on human body space-time interaction relationship

The invention provides a motion trail prediction method and system based on a human body space-time interaction relationship, and belongs to the technical field of motion trail prediction. Comprising the steps of performing three-dimensional human body posture estimation and two-dimensional point estimation on a court where players are located based on a sports competition video, and extracting motion posture data and track coordinates of the players; extracting a posture interaction relationship based on the motion posture data, and calculating a posture relationship adjacency matrix between players; extracting spatial features and time domain features in the attitude relation adjacency matrix by using a three-dimensional convolutional neural network, and solving the interaction strength between players to obtain a player interaction relation adjacency matrix; the player interaction relation adjacency matrix is converted into a group of row vectors to serve as time sequence interaction relation vectors of all players, and the row vectors and the trajectory coordinates of all the players are fused into input vectors of a trajectory prediction model; and inputting the player input vector and the time sequence interaction relationship vector into a trajectory prediction model for prediction to obtain a future motion trajectory coordinate considering the interaction relationship between players.
Owner:NINGXIA UNIVERSITY

Infrared image vertical stripe removing method based on dynamic adjustment of vertical stripe distribution

The invention discloses an infrared image vertical stripe removing method based on dynamic adjustment of vertical stripe distribution. The method comprises the following steps: (1) a high-dimensional feature vector matrix extraction step, and (2) a vector parameter extraction step: inputting the high-dimensional feature vector matrix and each frame of to-be-processed infrared image into a vertical line removing parameter generation network together, and generating two column vector parameters and two row vector parameters; 3) an improved traditional vertical stripe removing algorithm processing step which comprises the steps of performing Gaussian filtering on the infrared image to be processed in the row direction, calculating vertical stripe noise column by column, judging whether the vertical stripe noise is real vertical stripe noise column by column, obtaining a vertical stripe noise image of the image to be processed, and then performing subtraction to obtain an infrared image after vertical stripe removal; according to the method, a proper loss function and a proper training process are designed for the vertical stripe distribution information extraction network and the vertical stripe removal parameter generation network, so that the model achieves good performance, the distribution condition of vertical stripes can be effectively analyzed, and robust vertical stripe removal parameters are generated.
Owner:TIANJIN SURVEYING & MAPPING INST CO LTD

Water supply network water leakage abnormity identification method based on NMF dimension reduction

ActiveCN122046170AFeature DimensionAlgorithm
The invention provides a water supply network water leakage abnormity identification method based on NMF dimension reduction, and relates to the technical field of water supply network abnormity identification, and the method comprises the steps: embedding hydrophone sample data containing expert labeling information into a sample weight matrix as a row vector, and constructing a sample dimension loss item; hydrophone sample data containing industry feature priori are mapped to the feature basis matrix to serve as rows, and feature dimension loss items are constructed; combining the two loss items to construct a total loss function and solving the total loss function to obtain an optimal sample weight matrix; and performing clustering analysis based on the optimal sample weight matrix to obtain a clustering affiliation result of the hydrophone sample data so as to judge whether the water supply network to be identified has water leakage abnormity or not. According to the method, the double-constraint NMF framework fusing the expert knowledge of the sample dimension and the industry priori knowledge of the feature dimension is constructed, the accuracy and interpretability of hydrophone feature dimension reduction are considered, and the problems that an existing method is poor in interpretability, less in priori knowledge utilization and the like are solved.
Owner:AOTU TECHNOLOGY CO LTD

Intelligent table data escape and knowledge base construction method and system based on large language model

The invention discloses an intelligent table data escape and knowledge base construction method based on a large language model. The method comprises the steps that multiple document formats are imported; identifying the existence of the table, analyzing the row-column structure of the table, positioning the position of each cell, and extracting data in the table; the big language model understands the data significance of each cell according to the context and the data content in the table; performing escape on the original data; merging and storing the original data, logically partitioning the data, and vectorizing the data after escaping; table data in a knowledge base is obtained through a large language model knowledge base system, and a query request of a user is quickly responded through a vector index of the knowledge base. According to the method, the data in the table is intelligently converted by adopting a large language model semantic escape technology, and the data is embedded into the knowledge base through data merging operation, so that a user can conveniently query and utilize the data, and the problem of insufficient table data processing precision in the prior art is solved.
Owner:XINJIANG NORTH-WEST STAR INFORMATION TECH CO LTD

Robot control method and system based on multi-modal fusion

The invention relates to the technical field of robot control, and discloses a robot control method and system based on multi-modal fusion, and the method comprises the steps: obtaining multi-modal sensing data, extracting features, and carrying out the clustering, thereby obtaining an associated information cluster sequence; a cluster center vector is extracted and quantized, and a quantitative evaluation matrix is obtained; calculating a covariance between matrix row vectors, and if the covariance is greater than zero, marking the covariance as a positive correlation coordination component to obtain a coordination component set; grouping the coordination component set, and if the number of the components in the group is less than a threshold value, merging adjacent groups; selecting a central group and predicting a change trend, and optimizing robot parameters after evaluating a risk value according to the change trend; and optimizing the updated parameters according to the multi-modal sensing data and a preset updating amplitude, and if the difference between the parameters before and after updating exceeds a threshold value, reducing the updating amplitude, and readjusting the parameters to obtain a final decision model. According to the method, the problem of low robot group cooperation efficiency in a complex scene can be solved.
Owner:WUXI TUCHUANG INTELLIGENT TECH CO LTD

Light spot feature calculation method, device and equipment for dynamic image

The embodiment of the invention provides a light spot feature calculation method, device and equipment for a dynamic image, and is applied to the technical field of optical image processing, and the method comprises the steps: carrying out the summation of each row of a non-zero pixel matrix, obtaining a column vector, multiplying the column vector by an index row vector, dividing the product sum by the sum of non-zero pixels, and obtaining the light spot feature of the non-zero pixel matrix. Obtaining a y coordinate value; summing each column of the non-zero pixel matrix to obtain a row vector, multiplying the row vector by the index column vector, and dividing the product sum by the sum of the non-zero pixels to obtain an x coordinate value; according to the x coordinate value and the y coordinate value, x-direction centroid coordinates and y-direction centroid coordinates of the light spot are obtained; calculating the variance of the x direction and the y direction according to the x coordinate value and the y coordinate value, and calculating the light spot roundness and the light spot diameter based on a least square method according to the variance of the x direction and the y direction; and calculating a beam waist radius and a beam divergence angle based on the light spot diameter. In this way, the real features of the light spots in the dynamic image can be accurately calculated.
Owner:SHANDONG PROMOTE MECHANICAL & ELECTRICAL TECHNOLOGY CO LTD

Method for improving photoetching performance of dipole light source

The invention discloses a method for improving photoetching performance of a dipole light source. The method comprises the following steps of: finding out a selected area with an OPC (Optical Proximity Correction) segment coupling effect in a layout graph, selecting a plurality of adjacent selected OPC segments in the selected area, and combining the selected OPC segments to form a segment group; the row number and the column number of the Jacobian matrix are equal to the number of the selected OPC segments, and each element of a row vector of the Jacobian matrix is a derivative of the light intensity of one selected OPC segment corresponding to the row vector to the position coordinate of each selected OPC segment; each element of a column vector of the Jacobian matrix is a derivative of the light intensity of each selected OPC segment to the position coordinates of one selected OPC segment corresponding to the column vector. A Jacobian matrix is added into a cost function, then MB-OPC correction is carried out, and a light source in an OPC model subjected to MB-OPC correction is a dipole light source. According to the invention, the OPC convergence speed of an area with a strong OPC segmented coupling effect can be accelerated, and the contrast ratio can be improved.
Owner:SHANGHAI HUALI INTEGRATED CIRCUIT CORP

Computing method and device for realizing Fourier transform of parallel circuit

The invention discloses a calculation method and device for realizing Fourier transform by a parallel circuit. The method comprises the following steps: acquiring an input signal sequence of an input signal; based on a preset degree of parallelism, performing serial-parallel conversion on the input signal sequence by using a parallel circuit to obtain a signal transformation matrix; obtaining an original Fourier transform matrix according to the input signal sequence, and transforming the original Fourier transform matrix into a parallel Fourier transform matrix based on the degree of parallelism; and performing vector inner product operation on the row vectors of the parallel Fourier transformation matrix and the signal transformation matrix in sequence to obtain a Fourier transformation result of the input signal sequence. During calculation, it is not required that the length of an input signal sequence must be N power of 2 or 4, and it is not required that the input signal sequence must be uniformly sampled, but a Fourier transform result can be obtained by sequentially carrying out vector inner product operation on row vectors of the parallel Fourier transform matrix and the signal transform matrix, so that the calculation efficiency is improved, and the calculation cost is reduced. And the waste of computing resources is avoided.
Owner:XIDIAN UNIV

Minimum-delay fine-grained parallel Givens rotation method for ultra-large-scale matrix QR decomposition

The present invention discloses a method for minimal-delay fine-grained parallel Givens rotation of ultra-large-scale matrix QR decomposition, relating to the technical field of signal and information processing. The method comprises: an outer loop and an inner loop, wherein the outer loop is responsible for calculating a row vector of a Q matrix and an R matrix, and the inner loop is responsible for the Givens rotation of the two row vectors; the outer loop is decomposed into multiple loop blocks and a multi-level PE unit array is used to realize parallel operation of the outer loop slices, while the parallel calculation of the inner loop slices is realized by a step-by-step decreasing element update module inside the PE unit; the collaborative design of the inner and outer loop slices significantly reduces the idle time of hardware resources and optimizes the generation and transmission of key data, so that the system starts calculation with minimal delay; the method improves the utilization efficiency of hardware accelerators and is suitable for ultra-large-scale matrix decomposition tasks in the fields of signal processing, image processing, and scientific computing.
Owner:HEFEI UNIV OF TECH

LDPC (Low Density Parity Check) code check matrix construction method, encoder, transceiving end and experimental system

The invention discloses an LDPC (Low Density Parity Check) code check matrix construction method, which is used for processing a low earth orbit satellite ground foundation zone, and comprises the following steps of: A1, determining degree distribution of a basis matrix under a high code rate by adopting an extrinsic information transfer graph EXIT, and realizing construction of the basis matrix under the constraint of optimal degree distribution through extrinsic information transfer P-EXIT based on a basic model graph; a2, based on the code length and the code rate of FEC coding of the DVB-S2 protocol, determining the size and the expansion factor of a basis matrix corresponding to each code rate; a3, determining a finite field and a generator based on an expansion factor, and constructing a linearly independent shift value row vector and cycle coefficient table; a4, selecting row vectors from the cyclic coefficient table to construct a cyclic shift matrix, and performing short ring identification and elimination on the cyclic shift matrix; and A5, performing matrix hashing on the basis of the basis matrix and the cyclic shift matrix to obtain an LDPC check matrix.
Owner:FUDAN UNIVERSITY

Image processing-based defect detection method and system in laminating process of filter assembly

The invention belongs to the technical field of defect detection, and particularly relates to a defect detection method and system in a filter assembly laminating process based on image processing, so as to solve the technical problems that an existing detection method model is relatively weak in micro defect sensing capability and relatively low in detection accuracy. The detection method comprises the following steps: S1, carrying out block attention calculation on an image block sequence; s2, calculating an adjustment coefficient and adjusting the updating process of the row normalization factor by using the adjustment coefficient; s3, weighting corresponding row vectors in the initial context feature matrix by using the adjustment coefficient corresponding to each query block to obtain a weighted context feature matrix; and S4, outputting a mask pattern representing the position of the defect on the surface of the filter assembly. According to the detection method provided by the invention, secondary weighting and feature fusion are carried out on the initial context features, so that the accuracy of defect detection of the filter assembly is improved.
Owner:DONGGUAN WEIKE OPTOELECTRONICS TECH CO LTD

Matrix multiplication calculation method and device based on three-dimensional accelerated calculation architecture

The invention provides a matrix multiplication calculation method and device based on a three-dimensional accelerated calculation architecture, and the method comprises the steps: segmenting a quantized target matrix into bit slice matrixes along a bit dimension, and carrying out the clustering of the bit slice matrixes along a row vector dimension, and obtaining a clustering center matrix and a class residual matrix; combining repeated operation between different columns of the clustering center matrix to obtain an intermediate activation vector; multiplying the enumeration matrix by the intermediate activation vector to reconstruct a calculation result of the clustering center; multiplying the similar residual matrix by the input activation, and adding with the calculation result of the corresponding clustering center to obtain the calculation result of the similar residual matrix; and obtaining a multiplication operation result of the target matrix and the input activation based on calculation results of all the clustering centers and the class residual matrix. According to the method, through joint optimization of three dimensions of bit, row and column, the redundancy calculation is minimized, the number of necessary operations is effectively reduced, and the complexity and calculation overhead of large-scale matrix multiplication are reduced.
Owner:TSINGHUA UNIVERSITY

Matrix multiplication apparatus and method based on systolic array, and electronic device

The present application is applicable to the technical field of integrated circuits and neural networks. Provided are a matrix multiplication apparatus and method based on a systolic array, and an electronic device. The matrix multiplication apparatus based on a systolic array comprises: a systolic array formed by means of arranging processing elements, wherein two adjacent processing elements in each column are connected by a shift, each processing element has transmission channels in a row direction, a column direction and a diagonal direction, the row direction is used for inputting a row vector of a first matrix, and the column direction and the diagonal direction are used for inputting a column vector of a second matrix; a plurality of first control signal channels, which are used for inputting a first control signal for controlling the operating state of each shift; and a plurality of second control signal channels, which are used for inputting a second control signal for controlling each column vector of the second matrix to be input in the column direction or the diagonal direction. Therefore, a hardware structure taking into consideration a sparse matrix multiplication operation and a dense matrix multiplication operation is achieved, and the calculation complexity of matrix multiplication is reduced.
Owner:SHENZHEN INTELLIFUSION TECHNOLOGIES CO LTD

A fuzzy monotonic correlation image recognition and machine learning method

ActiveCN121392352BOffset noise reduction effectsReduce the impact of noiseCharacter and pattern recognitionFuzzy logic based systemsPattern recognitionAlgorithm
The application discloses a new correlation image recognition and machine learning method based on fuzzy monotony, and belongs to the technical field of artificial intelligence of pattern recognition and machine learning; the method is defined as FMMCA, which evaluates local fuzzy monotone correlation by comparing row vectors and column vectors of an image matrix pair by pair, then the local correlations are weighted and accumulated, and finally the global fuzzy monotone correlation between images is obtained. The application directly uses fuzzy monotone correlation analysis to replace classical correlation analysis for multi-view research, so that the problems existing in classical correlation analysis do not exist, and the fuzzy monotone method feature does not need to be measured statically by distance, but can be measured dynamically by interval change, so that the influence of some noise is offset, the performance is improved, a new fuzzy monotone machine learning method is formed, the optimization of a focus loss function is not needed, the parameters are few, the robustness is good, and the computing power is small.
Owner:SOUTH CHINA NORMAL UNIV

Method for distinguishing internal and external faults of flexible HVDC transmission line based on S-transform

The application discloses a flexible DC transmission line intra-zone and extra-zone fault discrimination method based on S transform, a method of waveform continuation is used to cover the subsequent wave with the wave tail of the first wave, the influence of the subsequent wave head on the frequency characteristics is reduced, the S transform is used to make the modulus time frequency matrix of the continued waveform, the row vectors of the modulus time frequency matrix are integrated, the corresponding amplitude-frequency curve is obtained, the energy operator is used to weight the amplitude-frequency curve to improve the proportion of high-frequency components, the energy accumulation of different frequency bands is constructed, the ratio of the high-frequency band energy accumulation and the total frequency band energy accumulation is taken as the intra-zone and extra-zone fault recognition criterion, when the ratio is greater than the threshold value, the intra-zone fault is determined, otherwise, the extra-zone fault is determined. The method meets the rapidity requirement of the flexible DC transmission line protection, has high sensitivity, and has important reference value for the development of the flexible DC transmission protection.
Owner:XIAN UNIV OF TECH

Web application automatic generation and data processing method based on spreadsheet mapping

The invention relates to the technical field of electrical digital data processing, and discloses a Web application automatic generation and data processing method based on spreadsheet mapping, which comprises the following steps: mapping spreadsheet cells into enumeration values to construct a type fingerprint matrix; calculating a type purity index of a column vector, identifying a vertical blocking band, and splitting the matrix into a plurality of orthogonal sub-matrixes which are not communicated with each other; calculating a type distribution difference value of adjacent row vectors in the sub-matrix to determine a horizontal logic partition line so as to define a logic data block; a Web application object model is assembled based on an arrangement mode of logic data blocks, signal crosstalk between transverse side-by-side data entities is cut off by introducing a vertical topology decoupling mechanism based on column entropy, and the technical problem that downlink feature scanning is easily interfered by orthogonal noise in a multi-table mixed arrangement scene is solved. And the deterministic structure reconstruction of the complex two-dimensional heterogeneous data under the condition of no preset template is realized.
Owner:HUNAN PYRAMID INFORMATION TECHNOLOGY CO LTD

Bearing fault identification method based on singular value decomposition

The invention provides a bearing fault identification method based on singular value decomposition. The method comprises the following steps: acquiring a discrete vibration signal of a bearing; a Hankel matrix of the vibration signals is constructed, the dimension of the matrix is smaller than < and is the length of the vibration signals, and the column number is determined based on the minimum characteristic frequency of typical components of the equipment; performing singular value decomposition on the matrix; selecting an effective row vector of the matrix by taking high periodicity, high cyclic stability and low complexity of the signal as targets, determining an effective singular value based on the effective row vector, and performing signal reconstruction based on the effective singular value; and carrying out spectrum analysis on the reconstructed signal and carrying out bearing fault identification according to a relation between a prominent frequency component in a spectrum and a bearing fault characteristic frequency. According to the bearing fault identification method, the features of the signals can be enhanced while noise reduction is carried out on the signals, and accurate judgment of bearing faults is facilitated.
Owner:SHENYANG AEROSPACE UNIVERSITY

Big language model binarization quantification method and system based on instructive alternate optimization

PendingCN122065892AHigh precisionReduce quantization errorComputer simulationsLinguistic modelAlgorithm
The invention provides a large language model binarization quantification method and system based on instructive alternate optimization, and relates to the technical field of large language model deploying.The method comprises the steps that a weight matrix is divided into an important area and an unimportant area by evaluating the influence degree of all weight parameters on the performance of a large language model; carrying out binaryzation on all areas of the weight matrix, and alternately optimizing a row vector scaling factor and a column vector scaling factor by adopting a first-order row-column alternate optimization iteration mode to obtain a first-order reconstruction weight matrix; and carrying out binaryzation again on the important region of the first-order reconstruction weight matrix, carrying out optimization by adopting a first-order and second-order row-column alternating optimization iteration mode to obtain a second-order reconstruction weight matrix, and correspondingly taking the second-order reconstruction weight matrix as a weight parameter after the large language model is quantized. The quantization error of the key weight parameter can be effectively reduced, the quantization precision is high, the quantization process completely depends on the internal structure information of the large language model, and the edge deployment compatibility is high.
Owner:GUANGDONG UNIV OF TECH

Push information determination method and device, medium, equipment and program product

A push information determination method, apparatus, medium, device and program product, the push information determination method comprising: acquiring position information of a target position and respective position information of a plurality of first objects, the position information comprising three-dimensional space coordinates under an earth coordinate system; a first matrix is constructed according to the position information of the target position, a second matrix is constructed according to the respective position information of the multiple first objects, and the number of row vectors in the second matrix is the same as that of the first objects; determining a preset number of target objects closest to the target position from the plurality of first objects according to the first matrix and the second matrix; and determining to-be-pushed information according to the information of the target object. Through the above technical scheme, the first matrix and the second matrix are constructed, and the plurality of first objects are sorted through the matrix-form operation, so that the calculation efficiency is higher, the resource occupation amount is less, and the accuracy of the to-be-pushed information is improved.
Owner:BEIJING ZITIAO NETWORK TECH CO LTD

Web application automatic generation and data processing method based on spreadsheet mapping

The application relates to the technical field of electric digital data processing, and discloses a Web application automatic generation and data processing method based on electronic table mapping, which comprises the following steps: mapping electronic table cells into enumeration values to construct a type fingerprint matrix; calculating a type purity index of a column vector and identifying a vertical blocking band, and splitting the matrix into a plurality of mutually unconnected orthogonal sub-matrices; calculating a type distribution difference value of adjacent row vectors in the sub-matrices to determine a horizontal logical segmentation line, so as to define a logical data block; and assembling a Web application object model based on an arrangement mode of the logical data block. The application introduces a vertical topology decoupling mechanism based on column entropy, cuts off signal crosstalk between horizontally arranged data entities, solves the technical problem that a horizontal feature scanning in a multi-table mixed arrangement scene is easily interfered by orthogonal noise, and realizes deterministic structure reconstruction of complex two-dimensional heterogeneous data under the condition of no preset template.
Owner:HUNAN PYRAMID INFORMATION TECHNOLOGY CO LTD

Method and device for generating statistical data matrix of user behavior

The present invention discloses a method and device for generating a statistical data matrix of user behavior, which relates to the field of computer technology. A specific implementation of the method includes: obtaining multiple single behavior data of multiple users for multiple items within a preset time interval; determining the non-zero statistical results of the target dimension data of each user for each item and the key-value pair data formed by the non-zero statistical results and the item identifier based on the single behavior data; storing the key-value pair data of the same user separately in a set, and storing the item identifier in the first subset, and storing the non-zero statistical results in the second subset; converting the item identifier in each set into the column number or row number of the matrix, so that each set becomes a row vector or column vector for forming a statistical data matrix. This implementation can quickly obtain the statistical results of user behavior data without using a structured query language, thereby generating a statistical data matrix that does not waste storage space.
Owner:BEIJING JINGDONG SHANGKE INFORMATION TECH CO LTD +1

Model training method and device, and operator package recommendation method

The application discloses a model training method and device and a recommendation method of an operator package. The method comprises the following steps: obtaining historical operator package data and historical voice data of a target object; generating a first row vector corresponding to the historical operator package data, performing sentiment analysis on the historical voice data, and obtaining a second row vector; merging the first row vector and the second row vector to obtain a target matrix; inputting the target matrix into a generative adversarial network model; determining a sentiment tendency reward according to the first row vector and the second row vector; determining a target probability as an optimization parameter, updating the optimization parameter, and obtaining a trained generative adversarial network model if a loss function related to the target probability meets a preset convergence condition. The application solves the technical problem of low recommendation accuracy of an operator package caused by the fact that a related operator package recommendation method is limited by a static model and does not fully consider the dynamic change of user demand.
Owner:CHINA TELECOM CORP LTD